The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-417-5771, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-417-5771 |
| Primary Part Number | 223-6405048-21 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Fastener Length | 2.000 INCHES NOMINAL IN |
| Material Document and Classification | ASTM F 593 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.875 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 211079830 | Naval Sea Systems Command (USA) |
| 223-6405048-21 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| M1222TYIGR316 5 /8-18UNF-2AX2.0 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5305-01-417-5771 is a Screw,cap,hexagon Head, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-417-5771 has 2 manufacturer part numbers on file: 211079830 (Naval Sea Systems Command), 223-6405048-21 (Naval Sea Systems Command).
Key specifications for 223-6405048-21: Fastener Length: 2.000 INCHES NOMINAL IN; Material Document and Classification: ASTM F 593 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.625 INCHES IN; Head Style: HEXAGON. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.